Answer
The two lines are the same.
Work Step by Step
Recall:
The slope-intercept form of a line's equation is $y=mx+b$ where $m$ is the slope and $b$ is the $y$-intercpt.
This means that if two lines have the same (equal) slope and the same (equal) $y$-intercepts, then their equations will be the same.
Hence, if two lines have equal slopes and equal $y$-intercepts, then they must be the same line.